Humidity control method and fresh air air conditioning system

Abstract

The present application relates to a kind of humidity control method and fresh air conditioning system, belong to air conditioning technical field, including: shell, multistage drying pressure reducing device and steam diffusion pipe, the left and right ends of shell are respectively equipped with steam inlet and steam outlet;Multistage drying pressure reducing device is detachably arranged in shell, for receiving the wet steam at steam inlet, multistage drying pressure reducing device is converted into dry steam by the multistage throttling expansion effect of itself to wet steam, dry steam is discharged through steam outlet;Steam diffusion pipe is connected to the steam outlet that shell has, for diffusing dry steam;The beneficial effects of the present application are: after multistage drying pressure reducing device carries out multistage pressure reduction and drying, realizes the atmospheric pressure and dry steam after steam outlet place is discharged, can better maintain the air humidity in environment.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of air conditioning, and particularly relates to a humidity control method and a fresh air conditioning system. BACKGROUND

[0002] In the industrial production and large public building environment, the humidifier is a device for increasing the humidity of the workshop environment in the central air conditioning system. The fresh air conditioning system often needs to be equipped with a humidifier to maintain the air humidity in the environment and ensure the production process requirements. At present, the humidifier widely used in the fresh air conditioning system is a steam-water separation type steam humidifier, and the core working part thereof is a steam-water separation tank. Through a simple mechanical structure, the steam and saturated water are separated in the flowing container space by using the baffle and the gravity difference between the steam and water, and then the steam is transported into the air conditioning system to complete the humidification work.

[0003] However, the existing steam-water separation type steam humidifier and the corresponding humidity control method have many defects, specifically as follows:

[0004] Low steam utilization rate and serious energy waste: in the traditional humidity control process, the superheated water in the supplied steam is not effectively utilized, and it is directly discharged as condensate water, resulting in a steam waste rate as high as 18%, causing a large amount of energy loss, which does not meet the energy saving requirements.

[0005] Large amount of condensate water generated, affecting system operation: the flow rate of the humidifier nozzle is usually maintained at about 10 m / s. The high flow rate makes it difficult for the steam to fully mix with the circulating air in the air conditioning system, and condensate water is easily generated during the mixing process. At the same time, the nozzle aperture is small (only 5-6 mm), which is not conducive to the diffusion of steam, further aggravating the condensate water problem. Long-term accumulation can cause water accumulation in the air conditioner, affecting the normal operation efficiency of the air conditioning system. SUMMARY

[0006] The present application provides a humidity control method and a fresh air conditioning system, which solves the technical problem that the existing fresh air conditioning system cannot better maintain the air humidity in the environment. The steam in the shell is subjected to multi-stage drying and pressure reduction by a multi-stage drying and pressure reduction device, realizing the discharge of atmospheric pressure and dried steam at the steam outlet, and better maintaining the air humidity in the environment.

[0007] In order to achieve the above purpose, the present application realizes the following technical scheme:

[0008] A fresh air conditioning system for humidity control, comprising:

[0009] a shell, the two ends of the shell being respectively provided with a steam inlet and a steam outlet;

[0010] A multi-stage drying and decompression device is detachably arranged in the shell for receiving wet steam at the steam inlet, and the multi-stage drying and decompression device converts the wet steam into dry steam through multi-stage throttling expansion, and the dry steam is discharged through the steam outlet.

[0011] A steam diffusion pipe is connected to the steam outlet of the shell for diffusing the dry steam.

[0012] Optionally, the multi-stage drying and decompression device is a six-stage steam decompression structure, and the multi-stage drying and decompression device has six diaphragms, each diaphragm being arranged in the multi-stage drying and decompression device through positioning bolts, and the multi-stage drying and decompression device being detachably arranged in the shell through the adjusting screw on the shell.

[0013] Optionally, the diaphragm has a flange block and a bottom plate, and the bottom plate of a preceding diaphragm abuts against the flange block of a following diaphragm in the direction from the steam inlet to the steam outlet, so as to form the multi-stage drying and decompression device.

[0014] Optionally, the diaphragm has a steam discharge hole for discharging steam and a bypass steam discharge hole for bypassing the steam, the steam discharge hole discharging the dry steam in the multi-stage drying and decompression device, and the bypass steam discharge hole allowing the bypass steam in the multi-stage drying and decompression device to pass to the chamber.

[0015] Optionally, the shell is provided with a steam discharge valve for discharging the steam in the chamber.

[0016] Optionally, the steam diffusion pipe is provided with diffusion holes in the side wall for diffusing the dry steam in the steam diffusion pipe.

[0017] A humidity control method includes the following steps:

[0018] Step 1: introducing wet steam into the multi-stage drying and decompression device through the steam inlet;

[0019] Step 2: the multi-stage drying and decompression device reduces the steam pressure step by step to atmospheric pressure through a multi-stage throttling expansion process;

[0020] Step 3: the multi-stage drying and decompression device dries the wet steam during the decompression process;

[0021] Step 4: discharging the water vapor or condensed water in the chamber to the outside of the shell.

[0022] Optionally, in step 2, the steam in the multi-stage drying and decompression device is bypassed to the chamber.

[0023] Optionally, in step 3, the steam outlet discharges steam with atmospheric pressure and dryness.

[0024] Optionally, in step 4, the steam in the chamber is discharged through the steam discharge valve.

[0025] Advantages of the present application:

[0026] The multi-stage drying and decompression device is detachably arranged in the shell, used for receiving wet steam at a steam inlet, and converting the wet steam into dry steam through multi-stage throttage expansion of the multi-stage drying and decompression device, and the dry steam is discharged through a steam outlet; the steam diffusion pipe is connected to the steam outlet of the shell, used for diffusing the dry steam. The steam in the shell is subjected to multi-stage decompression and drying through the multi-stage drying and decompression device, so that the dry steam at atmospheric pressure is discharged at the steam outlet, and the air humidity in the environment can be better maintained. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0028] Figure 1 It is a sectional structure schematic diagram of the present application;

[0029] Figure 2 It is a sectional structure schematic diagram of the multi-stage drying and decompression device of the present application;

[0030] Figure 3 It is a sectional structure schematic diagram of the multi-stage drying and decompression device of the present application; Figure 1 Connecting external structure schematic diagram;

[0031] Figure 4 It is a steam reusing effect diagram of the present application.

[0032] Legend: 1-shell, 2-multi-stage drying and decompression device, 3-chamber, 4-adjusting screw, 5-steam diffusion pipe, 6-diffusion hole, 7-steam outlet, 8-steam exhaust valve, 9-positioning bolt, 10-steam exhaust hole, 11-bypass steam exhaust hole, 12-steam inlet, 13-septum, 131-convex edge block, 132-bottom plate, 133-perforation. DETAILED DESCRIPTION

[0033] The embodiments of the present application will be described in detail below with reference to the drawings.

[0034] In the description of the present application, it needs to be understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0035] The terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified and limited, the meaning of "a plurality of" is two or more.

[0036] In the description of the present application, it needs to be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood in a broad sense, for example, it can be welding, or bolted connection, or riveting; it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0037] Embodiment 1

[0038] As Figure 1 shown, the present embodiment provides a new fresh air conditioning system for humidity control, comprising: a shell 1, a multi-stage drying pressure reducing device 2 and a steam diffusion pipe 5, the left and right ends of the shell 1 are respectively provided with a steam inlet 12 and a steam outlet 7; the multi-stage drying pressure reducing device 2 is detachably arranged in the shell 1, for receiving wet steam at the steam inlet 12, the multi-stage drying pressure reducing device 2 converts the wet steam into dry steam through its multi-stage throttling expansion effect, and the dry steam is discharged through the steam outlet 7; the steam diffusion pipe 5 is connected to the steam outlet 7 of the shell 1, for diffusing the dry steam.

[0039] The multi-stage drying pressure reducing device 2 is a six-stage steam pressure reducing structure, the multi-stage drying pressure reducing device 2 has six diaphragms 13, each diaphragm 13 is combined into the multi-stage drying pressure reducing device 2 through the positioning bolt 9, and the multi-stage drying pressure reducing device 2 is detachably arranged in the shell 1 through the adjusting screw 4 on the shell 1, and the adjusting screw 4 passes through the perforation 133 to combine each diaphragm 13 into the multi-stage drying pressure reducing device 2.

[0040] As Figure 2As shown, the diaphragm 13 has a flange block 131 and a bottom plate 132, and the bottom plate 132 of the former diaphragm 13 abuts against the flange block 131 of the latter diaphragm 13 in the direction from the steam inlet 12 to the steam outlet 7, so as to form the multi-stage drying pressure reducing device 2.

[0041] The diaphragm 13 is provided with a steam exhaust hole 10 for exhausting steam and a bypass exhaust hole 11 for bypassing steam, the steam exhaust hole 10 is used for exhausting dry steam in the multi-stage drying pressure reducing device 2, and the bypass exhaust hole 11 is used for bypassing steam in the multi-stage drying pressure reducing device 2 to the chamber 3.

[0042] The shell 1 is provided with an exhaust valve 8 for exhausting steam in the chamber 3.

[0043] The side wall of the steam diffusion pipe 5 is provided with a diffusion hole 6 for diffusing dry steam in the steam diffusion pipe 5.

[0044] Specifically, the working principle of the humidity-controlled fresh air conditioning system of the present application is that each diaphragm 13 is pre-filled with a drying agent, high-pressure steam is introduced into the steam inlet 12, the high-pressure steam enters the multi-stage drying pressure reducing device 2, the bypass exhaust hole 11 of each diaphragm 13 bypasses the excess steam in each diaphragm 13 to the chamber 3, the remaining steam in each diaphragm 13 is dried and flows out at the steam outlet 7, and the steam in the chamber 3 separates the shell 1 from the multi-stage drying pressure reducing device 2, i.e. a water film is formed between the shell 1 and the multi-stage drying pressure reducing device 2, which separates the shell 1 from the multi-stage drying pressure reducing device 2.

[0045] Example 2

[0046] Based on Example 1, as shown in Figure 1 The working principle of the multi-stage throttling expansion is that the multi-stage drying pressure reducing device 2 is provided with six diaphragms 13 from left to right, each diaphragm 13 is pre-filled with a drying agent, and the order from left to right is from the first diaphragm 13 to the sixth diaphragm 13.

[0047] The high pressure steam is introduced into the steam inlet 12, the steam enters the chamber 3 through the bypass steam exhaust hole 11 of the first diaphragm 13, the steam in the chamber 3, the remaining steam in the first diaphragm 13 is dried and then enters the second diaphragm 13 through the steam exhaust hole 10, in this way, the steam in the first diaphragm 13 is reduced in pressure through the bypass steam exhaust hole 11 and dried after passing through the steam exhaust hole 10; the steam enters the chamber 3 through the bypass steam exhaust hole 11 of the second diaphragm 13, the steam in the chamber 3, the remaining steam in the second diaphragm 13 is dried and then enters the third diaphragm 13 through the steam exhaust hole 10, in this way, the steam in the second diaphragm 13 is reduced in pressure through the bypass steam exhaust hole 11 and dried after passing through the steam exhaust hole 10; in the same way, the steam is gradually reduced in pressure and dried, and the steam is in the sixth diaphragm 13, the steam in the sixth diaphragm 13 is the steam with atmospheric pressure value and after drying.

[0048] Example 3

[0049] Based on Example 1-Example 2, as shown in the figure, the steam after the steam is divided by the cylinder is expanded through the multi-stage drying and pressure reducing device 2 in the shell 1 and the steam diffusion pipe 5. Figure 3

[0050] Example 4

[0051] Based on Example 1-Example 2, this embodiment is a humidity control method, including the following steps:

[0052] Step 1: introduce the wet steam into the multi-stage drying and pressure reducing device 2 through the steam inlet 12;

[0053] Step 2: the multi-stage drying and pressure reducing device 2 reduces the pressure of the steam to atmospheric pressure through multi-stage throttling expansion process;

[0054] Step 3: in the process of reducing pressure, the multi-stage drying and pressure reducing device 2 dries the wet steam;

[0055] Step 4: the water vapor or condensed water in the chamber 3 is discharged outside the shell 1.

[0056] Further, in step 2, the steam in the multi-stage drying and pressure reducing device 2 is bypassed to the chamber 3.

[0057] In step 3, the steam outlet 7 discharges the steam with atmospheric pressure and after drying.

[0058] In step 4, the steam in the chamber 3 is discharged through the steam exhaust valve 8.

[0059] The high pressure steam is introduced into the steam inlet 12, the steam in the shell 1 is multi-stage reduced in pressure and dried through the multi-stage drying and pressure reducing device 2, and the steam with atmospheric pressure and after drying is discharged at the steam outlet 7.

[0060] ​As shown in Figure 4 The multi-stage drying and pressure reducing device 2 can utilize more than 18% of the heat energy in the saturated steam, i.e. the steam heat in the chamber 3 can be reused for secondary evaporation instead of being discharged, and only less than 5% of condensed water in the chamber 3 can be discharged, i.e. through the steam exhaust valve 8. Compared with other steam humidifiers, the fresh air conditioning system of the present application can save 13% of steam. The steam utilization rate of the fresh air conditioning system of the present application can reach 95%, and only nearly 5% of the condensed water is discharged.

[0061] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A humidity-controlled fresh air conditioning system, characterized in that, include: The outer casing (1) has a steam inlet (12) and a steam outlet (7) at its two ends respectively; The multi-stage drying and pressure reducing device (2) is detachably installed inside the outer shell (1) for receiving wet steam at the steam inlet (12). The multi-stage drying and pressure reducing device (2) converts wet steam into dry steam through its own multi-stage throttling expansion effect. The dry steam is discharged through the steam outlet (7). The multi-stage drying and depressurization device (2) is a six-stage gas depressurization structure. The multi-stage drying and depressurization device (2) has six diaphragms (13). Each of the diaphragms (13) is assembled into the multi-stage drying and depressurization device (2) by positioning bolts (9). The multi-stage drying and depressurization device (2) is detachably installed inside the outer shell (1) by adjusting screws (4) on the outer shell (1). The diaphragm (13) has a protruding edge block (131) and a bottom plate (132). Along the direction from the steam inlet (12) to the steam outlet (7), the bottom plate (132) of the previous diaphragm (13) abuts against the protruding edge block (131) of the next diaphragm (13) to form the multi-stage drying and depressurization device (2). A steam diffuser (5) is connected to the steam outlet (7) of the outer casing (1) for diffused drying steam.

2. The humidity-controlled fresh air conditioning system according to claim 1, characterized in that, The diaphragm (13) has a steam vent (10) for venting steam and a bypass vent (11) for bypassing steam. The steam vent (10) enables the discharge of drying steam within the multi-stage drying and depressurization device (2), and the bypass vent (11) enables the bypass steam within the multi-stage drying and depressurization device (2) to pass through the chamber (3).

3. A humidity-controlled fresh air conditioning system according to claim 2, characterized in that, The outer casing (1) is provided with a steam exhaust valve (8), which is used to exhaust steam from the chamber (3).

4. A humidity-controlled fresh air conditioning system according to claim 1, characterized in that, The side wall of the steam diffusion pipe (5) is provided with diffusion holes (6), which diffuse dry steam in the steam diffusion pipe (5).

5. A humidity control method for implementing a fresh air conditioning system with humidity control according to any one of claims 1-4, characterized in that, Includes the following steps: Step 1: Introduce wet steam into the multi-stage drying and depressurization device (2) through the steam inlet (12); Step 2: Multi-stage drying and pressure reduction device (2) reduces the steam pressure to atmospheric pressure step by step through a multi-stage throttling expansion process; Step 3: During the decompression process, the multi-stage drying and decompression device (2) dries the wet steam; Step 4: Discharge the water vapor or condensate in the chamber (3) to the outside of the outer shell (1).

6. The humidity control method according to claim 5, characterized in that, In step 2, the steam in the multi-stage drying and depressurization device (2) is bypassed into the chamber (3).

7. A humidity control method according to claim 5, characterized in that, In step 3, steam outlet (7) discharges steam with atmospheric pressure and after drying.

8. A humidity control method according to claim 5, characterized in that, In step 4, the steam in the chamber (3) is discharged through the exhaust valve (8).

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